Was wondering how long it takes to overdose if you sniff too much fentanyl or fentanyl laced heroin. I'm alone and my dad's asleep so I literally wrote a note and loaded two syringes of narcan and put them next to the note on the floor and was holding a glass bowl in the air so if I fell out he would wake up hearing glass break. My running partner is not here and I want to get high. I've tested this dope it's heroin laced fentanyl usually stamp is "ras baraka" from Washington heights nyc. I would usually do half a bag but i am alone so I did like a sixth of the bag. Maybe a quarter I dunno. So anybody know how long?