Yeah just let them dry outside. Spraycan smell doesn't go away for awhile
If it doesn't go away try taking them off and see if the smell is still their when you turn up the heat. If the smell is still around could be coming from somewhere else. If the smell goes away when their off then their definitely your plastics.
Hopefull all goes well and it goes away. I had a bad smell under my undercarriage when I first bought my car. Smelled like tar melting and got me dizzy but that is a totally different topic it went away with no worries. I figured it was the protective lining Toyota uses to coat under neat the car.