いち酸化さんか炭素たんそ中毒ちゅうどくじゃなかったです
ichisanka tansochūdokujanakattadesu

Noun
Desu Copula

The polite, past negative form of 一酸化炭素中毒

1. Wasn't carbon monoxide poisoning.

Past/Perfective
Negative
Polite
Casual Register
Medicine