Will painting respirators protect one from the COVID-19 virus?

[TerraHertz]

On topic:
  http://joannenova.com.au/2020/03/masks-can-stop-maybe-75-of-influenza-and-you-can-make-them/

[ConKbot]

What the fuck is this thread? A few factual posters and a truckload of unsubstantiated FUD.

A proper accredited by whatever local agencies (NIOSH/OSHA in the US) i.e. Just not whatever weird knockoff direct import shit Amazon has in stock. With appropriate filters will provide protection for you. For US folk, N95 is equivalent filtration (95% >0.3um, non-oily particles ) as the medical masks, but medical stuff is rated for liquid jets for the surgery theater.  P95 is the same, but oily particulate is acceptable. P100 filters capture 99.97% for the same particle sizes, and can handle oily particulate too. On respirator filters, N/P95 generally has time limits, P100 is generally until it's too much effort to inhale, then replace. But RTFM from your manufacturer.
With a good fit (in the US, if you're required to wear a respirator for work, you're gonna have to go to a work medical clinic for a fit check to select the appropriate size) and not being exposed arterial spray, a halfmask/P100 filters is going to absolutely provide you with better protection than a N95 disposable with questionable seal.
The obvious issues are cleaning a reusable device. It's not like they don't need to get cleaned and disinfected regularly in normal circumstances, just more-so now. Masks are made with silicone and polypropylene, it's not like its hard to clean them via immersion.  And secondly, the exhale valve obviously isn't filtered, so it's not providing protection from you to other people. However other folks whining and crying about that in here doesn't magically make disposables available, so if you have access to one but not the other, your decision is made.

Tldr: use the right filters, clean the mask frequently, know the outside and filters are "hot", a good fit is important, and if you are sick, then you aren't helping anyone else by wearing it, like a disposable would. Neither a disposable mask or reusable half mask respirator provide protection to your eyes, so mind that as you deem appropriate.

[SiliconWizard]

Neither a disposable mask or reusable half mask respirator provide protection to your eyes, so mind that as you deem appropriate.

You're raising a good point here. Whereas contamination through inhaling is a bit more likely (you're obviously force-feeding it through your nose), it can absolutely be through the eyes as well. A proper protection would include appropriate glasses. It's a particularly important point to keep in mind for anyone who would have to deal with someone infected.