What's the most disturbing thing about the comic?

Yucky bacteria and viruses, eek!, ... some scientists believe as many as 90 percent of the cells on our body are bacteria. 10% of me just got creeped out.	30	4%
Depiction of sputum, ... talk about being slimed!	72	9%
The fact that it reminds me I have to go to such disease-breeding conferences like CES, ... always pack a HAZMAT SUIT!	55	7%
That some geek sneezed without covering his mouth. Shame on you geek, you should know better!, ... your heart's on your sleeve, and your snot should be too.	138	18%
How would you inoculate a virus?, ... nano-virus virus?	247	33%
I'm packing my CES survival kit!	177	24%