Kristina, You are exactly the kind of American we need to rescue, someone who is in love with their work and not afraid to push forward. 

I am  retired Microbiologist and the lack of knowledge by politicians, even doctors, who do not listen to Microbiologists, is staggering and it only further panics the public. 

I suggest you contact your local hospital and offer your services through them to patients, PROVIDED the Chief of Infectious Diseases (usually an MD/PhD Microbiologist) provides you with the guidance and training in how to work with techniques and tools to prevent transmitting anything. 

With that background I don't see how any mayor could question your skills in performing you talent on customers in your shop. It is a combination of protective barriers and behaviors.