I haven't heard anything, in spite of being inundated with Coronavirus news like everyone else, that loss of smell or taste are symptoms of Coronavirus. As for acid environments, the pH up your nose as you inhale virus particles, or in your eyes or mouth, is quite likely to be the much same as everyone else's. I know you like to be different and stand out from the crowd, but I might suggest you stick to known facts when it comes to this issue. It's worrying enough without rumour-mongers putting their oar in.