COPD has,slowed me down (so has age), but it is,NOT going to stop me from doing what I love like garden and yard projects. Well, last week I took my little shower chair that I converted to a garden chair, little oxygen cylinder on a cart, hand saw and clippers, big paper leaf bags, and spent 4 days trimming a way overgrown forsythia line. I didn't wear my mask!! Dumb. Ended up in upper respiratory distress for 4 days. Will not forget the mask again. Does anyone else work in the gardens and yard wearing a mask? Any additional suggestions? I am 74 and really enjoy outdoor work and feeding my collection of outdoor critters.