Fullface masks with cheap P3 filters will work fine against pepperspray (be sure to lose the filter after you get sprayed). You can get something good enough on AliExpress for like 30 bucks, from several “we have 3M at home” brands.
For CS/CN aka teargas deployed in wide-area use, you’ll definitely want an active carbon filter. Note that those will work fine on your knockoff gasmask, but the fit of it will be much worse than a proper (150 dollar) mask, so you’ll definitely get some tiny exposure. It gets worse if your face isn’t that of a cleanshaven white male. Note that activated carbon has a limited lifespan, whether in use or not. Technically you’ll want RCA filter canisters, but those aren’t in most stores.
Fullface masks with cheap P3 filters will work fine against pepperspray (be sure to lose the filter after you get sprayed). You can get something good enough on AliExpress for like 30 bucks, from several “we have 3M at home” brands.
For CS/CN aka teargas deployed in wide-area use, you’ll definitely want an active carbon filter. Note that those will work fine on your knockoff gasmask, but the fit of it will be much worse than a proper (150 dollar) mask, so you’ll definitely get some tiny exposure. It gets worse if your face isn’t that of a cleanshaven white male. Note that activated carbon has a limited lifespan, whether in use or not. Technically you’ll want RCA filter canisters, but those aren’t in most stores.