Hi there. It sounds like this AIDS thing is a real concern of yours.

I am 100% certain that if AIDS could be transmitted by casual touch and doorknobs and things pretty much everyone on earth would have it by now. I am 100% certain that if it could be transmitted in such ways scientists and researchers would be well aware of it.

I know your fears are coming from that OCD place and nothing I or anyone else says will calm them tho!

Welcome to the forums.