Mercury in your system is potentially dangerous.  It can get in the air as a gas under vacuum and will build up in the users physical body making for all kinds of health related problems.  It doesn't leave you, you just serve as a kind of human warehouse for it until it reaches terminal levels.  

We have traps for mercury vapor typically composed of activated carbon elements that help trap mercury.  It is highly recommended that venting from the exit of the trap be to a hood and that your engineering department and safety department of your company understand what is going on.

This stuff is dangerous please recognize that and lets take the appropriate steps to trap it out of the air stream.