the v* or d* particles?

I have been so afraid of ever being in a relationship one day for the simple fact that I am afraid to kiss my future (if that) partner because of if he has contaminated v* or f* particles in his mouth.

We all know how it is ingested...well, what if he does happen to eat without washing his hands and "eats" some bad noro particles.How long do you think it will take for them to "digest".

This is also making me feel like iwill be a bad parents because i will be too afraid to kiss my kid on the lips.