I used to work on a military base spraying (carc) Chemical Agent Resistance Coating and we had fresh air for big paints and 3m resperator for small touch ups. For those who don't know the old carc paint used to be leaded heavily for durability and it could kill you if you were exposed to to much of it. Now they have gotten away from the lead but the paint is still toxic. We have been shut down by OSHA once because our booth wasn't up to standards. Point is USE RESPERATON don't let your hobby or job shorten your life.
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