I don't think any conventional filters are going to take of smells or VOCs - only particulate matter. The VOC stuff is controlled to a great extent anyway by the use of low VOC materials that are now required in many areas. I suppose the possible health effects on very close neighbors could be an issue with isos. I suppose also that environmental issues with discharges of other hazardous air pollutants (hexavalent chrome was it?) that they mentioned would not be solved with filters either, at least not any conventional (read cheap) ones. Of course painting only one or two tractors a year is so insignificant, air pollution wise, as to be laughable. However, when lawnmowers and backyard barbecue grills are targets for regulation, I guess anything is possible. Whatever the EPA winds up with for final regulations will be very difficult to enforce on individuals in the "out of sight, out of mind" category. Unless it's tied to purchase of materials. Like you, I don't have any nosey neighbors that can see what's going on and there is no visibility from the public highway. Unless someone knows and complains to the correct authority, I doubt it will become a problem. Of more concern to me is any chance of site inspection requirements that I couldn't possibly meet, training demands, etc just to be able to get a bureaucratic "license" or "approval" to purchase my very minor quantity of painting materials. I think that's where the problems, if there are any, for the typical DIY will show up. I also think that the current wording on the package labels (For professional use only...Not for sale to the general public, etc) if pushed and enforced, could prohibit sale to the casual DIY without further regulation. There are no economic incentives for the local jobbers in my area to do anything like that - at least not now. There are too many "small time" types with home-based body shops and DIYs around that are a significant portion of their business.
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