Yeah, that is very true. I wish I could go deeper into that pigment making, but that is for when I am using oil-paint instead of acrylics. Slowly I am turning away from aerosols in my little workshop. Partly for the environment and partly for my health. Even with a mask I can get blackouts and have dizziness throughout the job, which is bad. My solution is using airbrushes and a paintgun, which are way more efficient and do not use aerosols except compressed air. :-)
Edit: this is sort of relevant.