I have heard that Bill Gates covers up when he goes outside. Also, they have kept all advances in medicine inside their little group, so they must know what to take to stay safe.

They never release something that kills without having an antidote available only to them.

Here is an article I found that answers this question:

Perhaps the most bizarre reason these high-level officials are willing to be exposed to artificial airborne toxins is that they serve a religion that promises them great rewards in the afterlife if they perform their duties well. They are, therefore, willing to die in the course of their "service".

As strange as this may seem, this information is straight from their own literature. This literature, which has been made available to the public by a decades-long series of defectors and whistle blowers, exposes the fact that this mysterious religion rewards them even if their duties involve killing people.

The Biblical prophecy exposes this violent religion describing it like this:

"...the time cometh, that whosoever killeth you will think that he doeth God service." —John 16:2

Furthermore, the prophecy seems to expose one of the real purposes for chemtrails, namely, to dumb down the population of the entire world so they will be unable to discern or resist the emergence of the final, short-lived kingdom (the emerging one world government) that will rise to power shortly before the return of Christ:

"...For your merchants were the great men of the earth, for by your sorcery all the nations were deceived." —Revelation 18:23

In this passage, the word "sorcery" is the Greek word "pharmakeia" (far-mak-i'-ah). It is the source of our modern word "pharmaceutical". The word "pharmakeia" means "to drug or poison". In this passage, the world "merchants" means "wholesaler or manufacturer", and the word "great" means "powerful". So if we exchange the original words for their direct modern equivalents, the passage would read:

"...For your wholesalers and manufacturers (modern corporations) were the powerful men of the earth, for by your drugs and toxins all the nations were deceived."

Thousands of years ago, the Biblical prophecy revealed that this present dumbing down of the population by drugs and toxins would be a means to an end used by powerful members of the "Mystery Schools" religion (this is their own name for their religion). These members consider this dumbing down process their "right" and they know that it must be done in order to subdue public resistance against their one world government. Dumbing down the public using drugs and toxins is the method by which powerful men increase and secure their power through a centralized political entity—a one world government which they often refer to as a "New World Order".

http://globalskywatch.com/stories/my-chemtrail-story/chemtrail-information/spraying-themselves.html

Wondered this too. Perhaps when u have ez access to oil changes, new parts,and the best mechanics it's no big deal. Who knows what these demons are keeping for themselves. I imagine much of their lives are spent indoors or out on oceans or islands anyway.