A madman (or course he must be mad!), Dr Tor, is issuing dire threats with the diabolical form of death, so Gary and his pal Alec, and a beautiful blonde called Carlotta Zambezi (a great scientist, as claimed by Dr Stark) have quite a threat to stop. Our High Moderator says, after hearing a description of the malodorous gas, “Its victims strangle on their own exhalations!”
Wait, Gary...we residents of Earth in 2021 A.D. have paper masks we are using to try and fend off a deadly virus. Maybe if you ask around you’ll find a box of them somewhere in storage.
I have one more thing to add. Gary’s pal, Alec, has a handsome mustache, waxed on the ends, making him look like the villain in a melodrama. In one of the last panels Alec has his arms around two men with beards. Hairy faces being in vogue right now gives them all a classic look.
From All-American Comics #14 (1940). Grand Comic Database credits Jon L. Blummer for both writing and drawing.