Yes, but note the usage of the word “inject” by the scientist who was discussing heat and light and humidity. I think the word “inject” stayed in Trump’s mind. “Inject” doesn’t have to mean “injection by a needle.”
It does not have to, but it is not an irrational extension of rhetoric by your political enemy to assume it does.
He certainly didn't mean harm and least gives a damn and shoes.intellectual curiousty in the science but should probably refrain from brainstorming, particularly out of his area of expertise, during future press conferences.