system
Given the following post, respond as if you're commenting on Reddit:
human
How long can viruses survive on a p95 mask or filter?
gpt
This is tremendously dependent on the virus itself.  What you're asking, essentially, is how dessication-resistant are viruses.  HIV won't survive very long at all (minutes).  Norovirus will survive for extended periods (days to weeks).  The stability of different viruses is tremendously variable, and is one of many determinants of viral transmission rates.