Some of my work is for a major bus company, I know what the trimmers and cleaners have to put up with.
Human Fleas - Most folks will tell you people do not become infested with or get fleas! This is not true at all, in fact there is a species of flea called the: Human Flea. It looks very similar to any other flea, except under a microscope. This type of flea likes to infest the hair of humans, it easily finds a host by hiding on the backs of seats of buses and other vehicles, and hitching rides in the hair of new passengers. These fleas love to infest hairy areas of people such as the heads, under the arms and other areas. They live quite well on people, and gorge themselves off the blood. Human Fleas are not that common anymore, thanks to better hygiene and cleaning methods, but they are still out there.
Rentokil warned that infestations on public transport were are at an all-time high. "The average commuter will always be close to cockroaches, bedbugs and fleas," said Savvas Othon of Rentokil.
Adrian once again you are wrong, stick to what you know about and I will do the same.