#smokeUnmoderated tagAll postsExplore CommunitiesTrending CommunitiesSteemitCryptoAcademyNewcomers' CommunitySteemit Feedbackআমার বাংলা ব্লগKorea • 한국 • KR • KOSTEEM CN/中文AVLE 일상Steem POD TeamTron Fan ClubSteem AllianceBeauty of CreativityWORLD OF XPILAR#smokeTrendingHotNewPayoutsMuteddudlaspov (25)in #smoke • 3 days agosmoke extraction fansWe had to design a ventilation system for a large underground garage recently, and safety in case of fire was a top…