@cissa I must say that whether on antibiotics or not, I am selective about masking. I live in two worlds, 1500 miles apart.
In the South, I probably acquired MAC from the feral chickens in my yard, as well as the migratory birds. Here I mask, even when weeding, for fear of reinfection.
In Minnesota, I mask while mowing and weedzwhacking, where particles fly. Most of the ti e, while weeding and planting, I wet everything before I begin. I now leave the digging, soil dumping and mulching to my younger, stronger assistants.
My ID doc strongly encouraged me to keep gardening, which I have been doing since I was 9 years old 😅.
Also, to avoid bringing the outdoors in, I dump garden clothes in the laundry room, if not right into the washer, and leave shoes outside.