that is because you destroy your receptors in nose with IPA 
No really I moved my printer to office and IPA is in other office room that is not using and its well ventilated. I red that IPA is bad for nose receptors, head hurt, dizziness and stuff like that, Is it really that bad because it is type of alcohol? I smell Jegermaister 
Also red something abut resin but there is my link up there I posted year ago