n95 particulate respirator mask s for filter dust and antivirus on dark background

air antivirus art background bacteria bad breath care contagious corona cough crisis dark day design disease dust effect emergency exhale face filter flow fog heart hospital hygiene hygienic icon illustration inhale love luck lung mask medical micron mist n95 particulate patient pm2 pollutant protect realistic respirator secretion smoke sneeze spread steam touch valentine vector vectors virus world