https://www.history.co.uk/articles/strangest-deaths-of-roman-emperors
Ick...
So, one suicide, two accidents, and two from natural causes. That's the strangest deaths they could find in what is a fairly large group?
And for Roman emperors, a vigorous stabbing was natural causes anyway...
Really daft to question the idea that Carus might have succumbed to one because he was militarily successful!
The Byzantine deaths on the otherhand....