ookaookaooka started this idea for disturbingly realistic superheroes. The examples used are from Marvel Comics, including Vision, Captain Marvel, Bruce Banner aka Hulk, Tony Stark aka Iron-Man, Spider-Man, Scarlet Witch, Thor, Black Widow, Black Panther, Steve Rogers aka Captain America, Gamora, Clint Barton aka Hawkeye, and Bucky Barnes aka The Winter Soldier:
They didn’t have asthma inhalers back then. Having asthma made you ineligible for the military because there was no treatment.
In the UK, asthma is still an automatic fail for service in any branch of the military (whether full time or reservist). No matter how well controlled by medication. Personal experience of applying to join the Royal Naval Reserve). Is it different in the USA?
Metered-dose inhalers – what the average person would think of when “asthma inhaler” is said – were only invented in 1956, so Steve wouldn’t have used one unless the MCU or Marvel Comics realities saw them invented earlier.
That being said, powdered medication nebulizers existed and were used for asthma treatments…so I suppose it could be argued Steve just found a way to get his hands on an MDI as a modern replacement for the nebulizer he would have carried around or at least had at home.
And then we saw Clint with hearing aids in Hawkeye
This concept is literally just a comic which I wrote:
https://www.amazon.co.uk/dp/B0CTHRCDHY