Before you all answer my question, it would need to be something with no scents because of all my allergies.
The fumes I'm talking about is whenever someone who smokes touches things I can't touch without having a terrible allergic reactions-hives.
My brother-in-law who smokes was on my computer just a few minutes the other day while over this way for his job(not a computer job).

It also seems computers seem to like to attract alot of dust. I've always been allergic to dust for a long time, and been so much worse lately with a sinus infection I've had since March.

Anything that wont damage the computer to get the fumes and dust off?
Thanks

We use "Cleaning duster". It is in a can and is, basically, pressurized air. However, do not use this on the monitor. Many people utilize used dryer sheets to clean the monitors. They also come in non-scent versions.

As for others using your computer, if you have allergies they should respect you and your space by not smoking or using the computer.

To get rid of scents/odors, I suggest Febreeze. Many of their products do not have a scent.

Also, change the furnace/ac filter every month. This helps to cut down on dust.

There are also air fresheners which do not have a scent but will remove odors from the area.

Good luck.