Well, I decided to eat cheese that has been untouched for about a week...wrapped up, but not tight. It is black diamond, old cheddar...It smelled weird and really strong, and didn't taste right. No hardness or mold. but I had a bad feeling about it. I of course looked up al sorts of fp's and scared myself, thinking what if I touched it last week with dirty hands and then it has had all week to grow bacteria...I am freaking out, please help...