A lot of wildfire smoke has been hanging around where I live. The air quality has been at times much worse than even China's most foul. It has affected me quite substantially so I've had to avoid going outside. I wonder if anybody has found a brand of mask that has helped them with any environmental sensitivities? Ive ordered some single use masks that are highly regarded, but one that could be used for weeks/months before disposal would be great, as it seems like this whole smoke thing is likely to become the norm in the summers.