<<Disclaimer: Verify this information before applying it to your situation.>> I'm very sensitive to solvent and gas fumes and have to use a mask at work. If filling up the lawn mower or car knocks you out for 2 or 3 hours you might want to get a mask. We use a PRO-TECH respirators inc. mask. PRO-TECH RESPIRATORS INC. BUCHANAN, MICHIGAN Use the cartridge for organic vapors. Masks come in small medium and large. Most men will wear a medium and most women will wear a small. This is all the information I have at home, I can get a street address and number if you need it. The mask and organic vapor cartridge work very well. I use it around strong vapors, and it blocks the fumes completely. [log in to unmask] GF in TN