do you mean if you cough or something?
there is a valve on the mask so you can exhale without breathing out of the entrance of the mask.
the whole thing works like a charm, you just breath, get light headed and reallly baked
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do you mean if you cough or something?
there is a valve on the mask so you can exhale without breathing out of the entrance of the mask.
the whole thing works like a charm, you just breath, get light headed and reallly baked