The video shows it reflecting projectiles but the page does not mention it
Bonus damage from enemy sources[]
Just test it out that even charmed enemies and brimstone lasers from enemy sources will also do extra damage from hemoptysis though extensive testing might be required
I just have a carried run in my T. Azazel by Poke Go Vis and Anima Sola as well as previous observation so I just wanna let you guys know