Amazing Spider-Man #17, page 18, panel 2
Amazing Spider-Man #17: Nova Time 10
Ruggedly Written by: Stan Lee
Robustly Drawn by: Steve Ditko
Recently Lettered by: S. Rosen
Remember when the Green Goblin used such weapons as bombs that look like ghosts from a Mario game that explode into a thick, clinging mist that surround someone to suffocate them? Aaah, the good old days, back when you could cry 'Make Mine Marvel' safe in the knowledge that nobody thought abut a villain's arsenal beyond the point of how cool it looked.
Anyway, it turns out misty ghost bombs can be neutralised if you have the power to set your entire body on fire and can focus the heat of that fire into one part of your body. So I guess that's why we never saw these weapons again.
Check out our coverage of Amazing Spider-Man #17 on our thirty-fifth episode: House of the Fallen Storm