Tumblr - But those don't harbor infectious pathogens.

If you want to enjoy pizza, you'll get obese and die.
If you want to enjoy French fries with salt, you'll clog your arteries and die of a heart attack.
If you want to enjoy chocolate, you'll get diabetes and die.

Seriously, I think these health advertisements won't be happy unless we're eating plastic bags too >.<

No, but your digestive system is going to be seriously strained when attempting to digest plastic.
I doubt your intestines will thank you either.