suffocated
suf-fo-cat-ed
verb
Died or caused someone to die from lack of air or oxygen.
"The smoke from the blaze suffocated several victims."
adjective
Unable to breathe due to lack of air; feeling trapped or restricted.
"She felt suffocated by the oppressive atmosphere."
Thesaurus
Synonyms: choke, suffocate, asphyxiate, stifle, gag, strangle, smother