And even then, there's a significant safety margin worked into the advice that you shouldn't swallow toothpaste. You'd need to eat several tubes of prescription strength toothpaste to get sick from fluoride.
Lettuce grows in a bundle of very tightly packed leaves. At no part in the growing - transport - shelving - selling chain can anyone be expected to thoroughly wash between the leaves, especially near the root. Rinse your veggies before using.
I usually get these little dudes in the summer. I let them be when I can stomach it, but I have this one lamp at my desk pointed up at the wall to give me some indirect light. Occasionally a house centipede will crawl along in front of the light and cast a really long shadow to freak me the hell out.
I understand what you're saying here, but the set of people killed by "every disease ever" includes the entire set of people killed by mosquito-borne diseases. Mosquitoes can't have killed more people than every disease ever because mosquitoes' kill count is part of every disease ever.
Additional living space (you need specialized training and a permit to enter)