I always wear a dust make or organic vapor respirator when sanding, cutting wood on the table saw or cutting grass and also when working with contact cement, oil based paint, spray paint and other solvents. Here’s a video talking about the masks I use:
This 3M dust mask is my go-to and I always wear it when sanding, cutting wood for woodworking project and even when mowing the lawn.
I wear this organic vapor respirator when working with oil based paints, spray paint, contact cement and other solvents. It has a charcoal cartridges and a pre-filter.