Meaning of 噎 in Japanese

私は煙でむせた。
I was choked by smoke.

パンの皮にむせ返る骸骨。
There's a skeleton choking on a crust of bread.

涙にむせんで何も言えなかった。
She was choked with tears and was unable to speak.

彼女は母親の事を話するときはいつもむせび泣きする。
She can't talk about her mother without choking up.