Does fluticasone propionate make you gain weight?

I'm trying to find out! You tell me!

It is entirely possible that any medication containing fluticasone can cause weight gain. Most books do not list weight gain as a side effect, but like with any other corticosteroid, there is a risk. Because fluticasone propionate is an inhaled glucocorticoid, the risk is lower than with oral glucocorticoids, but remains nonetheless.

No - weight gain is not a side effect of inhaled fluticasone.
https://www.drugs.com/sfx/fluticasone-nasal-side-effects.html