I've learned sodium lauryl sulfate (SLS) kills the coronavirus by breaking down its protein capsule, so my question is, can foods containing SLS protect against the COVID-19 outbreak?

Normally I do not pay attention to emails like this, but yours intrigued me so I’ve chosen to answer it. I assume you decided to send me your interesting question after reading my blog https://www.zeroxeno.com/blog/sodium-lauryl-sulfate-hiding-your-food. Whether your original email was sent to me in jest or as a serious question, I decided it warrants a response.
I do not believe marshmallows or other foods that contain sodium lauryl sulfate (SLS), as your question posed, would have a protective effect against the coronavirus. The COVID-19 pandemic is a severe acute respiratory virus that is transmitted mainly through contact with surfaces which have been contaminated by viral containing fluids. Disinfection methods employed must therefore be externally applied to stop its spread and I do not seriously believe the application of marshmallows or other SLS containing foods, to surfaces, would stop the spread of the contagion (nor do I think you seriously believe this either). Additionally, I cannot imagine the ingestion of foods containing SLS would protect anyone against catching the coronavirus nor help in their recovery if infected, but I'm willing to be proven wrong.
I know research has proven there are safer alternatives than SLS to reduce the infection rate of the coronavirus. That being said, the addition of SLS has recently been shown to improve the virucidal efficacy of some sanitizers
Numerous studies prove various types of past coronavirus's were effectively inactivated by hydrogen peroxide (H202), food-grade ethyl alcohol (ethanol) and ultraviolet light. They are safe options to choose if you are looking for natural ways to sanitize and keep your family healthy and xenoestrogen-free!
UV-C light (185 nm - 400 nm) is the high-energy portion of the UV spectrum which studies have proven effectively destroy the DNA of bacteria, viruses and fungi including various types of the coronavirusHydrogen peroxide, in simplistic terms, is water with an extra molecule of oxygen added. Its represented by the formula H2O2 (two molecules of hydrogen attached to two molecules of oxygen). Ethyl alcohol, also known as ethanol is the only type of alcohol that's edible, vodka being an excellent example of this type of alcohol.
Other studies have shown various types of coronavirus can be effectively inactivated by 0.1% sodium hypochlorite. Most people know **sodium hypochlorite by its common name, bleach. Sodium hypochlorite in its purest form is a solid white powder, which to create household bleach is dissolved in water. Generally the only other additives to make bleach are calcium hypochlorite (the calcium version of sodium hypochlorite) and sodium hydroxide (a very alkaline substance that is created by electrolysis [passing an electric current through] of liquid solutions of sodium chloride (table salt). Diluted correctly, bleach does not have hormone disrupting effects. However, if there is a fragrant scent to bleach, it is because perfume was added. The chemicals used to create fragrances do have hormone disrupting effects and should be avoided. 
It is also interesting to note that viruses, including the coronavirus spread or transmitted by droplet are 5-10 micrometers (μm) in size and are heavier than air, which means gravity pulls viral droplets to the ground in seconds. Viral aerosols, on the other hand, have particulates smaller than 5 μm, which allow virus particles, known as virions, to float in air for up to a half an hour after transmission. Droplet transmission can be stopped by cloth masks, but aerosols cannot. I am not biased for or against wearing masks to combat the spread of COVID-19. My goal is to provide research based upon the most recent scientific studies so people can make their own choice as to how to protect themselves from the coronavirus.
I do recommend people develop healthy habits and boost their immune system so their body’s natural defense system is at an optimal level to fight off any viruses including the coronavirus.
Past pandemics have mainly been viewed almost exclusively as a virology problem, with toxicology origins being mostly ignored, but a November 2020 study points out that "This perspective is not supported by the evolution of COVID-19, where the impact of real-life exposures to multiple toxic stressors degrading the immune system is followed by the SARS-CoV-2 virus exploiting the degraded immune system to trigger a chain of events ultimately leading to COVID-19. This immune system degradation from multiple toxic stressors (chemical, physical, biological, psychosocial stressors) means that attribution of serious consequences from COVID-19 should be made to the virus-toxic stressors nexus, not to any of the nexus constituents in isolation. The leading toxic stressors (identified in this study as contributing to COVID-19) are pervasive, contributing to myriad chronic diseases as well as immune system degradation. They increase the likelihood for comorbidities and mortality associated with COVID-19."

The founder of Zero Xeno, Bonnie Penner and all employees are not medical doctors or trained medical professionals. All advice and information posted on this website is from personal research and/or experience and is intended for general educational purposes. This information is not intended to be a substitute for professional medical advice related to specific medical conditions. We cannot diagnose illnesses nor confirm any claim as to therapeutic safety, effectiveness or course of treatment. Always seek the advice of your physician or other qualified health professionals for any concerns regarding your health. Only your physician can provide specific diagnosis and treatments. Please refer to our full Disclaimer for more details.