Sougo is honestly just as baffled as Tamaki about it. He licks his lips and gives the petals a very uncertain look as he straightens up, clearing his throat almost like he's trying to make sure there aren't any more petals stuck in there.

"N-no! I didn't... why would I eat flowers?? I... I don't know why I coughed these up..."

Though... he does have a small feeling about it. Because his traitorous little heart was being really vocal just before this happened...