So you're going around and "smelling" white dust? Sounds like you've got some good friends...
LOL that is funny!
Cleaning a computer reminds me of a job I got about 10 or 12 years ago. A medical company called and told me they were having problems with their main frame randomly going down and it was so old that no one would even look at it.
I showed up and they had a fan in front of it and I asked what that was for and they said that it would not crash as often with the fan placed where it was. The unit was on a carpeted floor...
You can see where this is going.
I opened the computer and it was packed, I mean packed with filth. I asked if they had a vacuum cleaner ... I used it to pull as much gross #$%$ out as possible and then proceeded to clean it in a normal manner.
I don't think I will ever forget that incident.