<p><span class="h-card" translate="no"><a href="https://mastodon.social/@whitequark" class="u-url mention">@<span>whitequark</span></a></span> <span class="h-card" translate="no"><a href="https://social.restless.systems/@elena" class="u-url mention">@<span>elena</span></a></span> as someone who knows nothing about this kind of respirator but is curious about getting one for covid and the inevitable forest fire smoke. do you have recs or resources for what to look for feature wise and to decide what you need?</p>