also: インチキくさい
i-adjective
fishy; dubious; questionable; false-looking
Informal adjective describing something that seems fake, suspicious, or not genuine. Often used for deals, products, or stories that feel like a scam or trick.
See also: うさん臭い
あの話はいんちき臭いから、信じないほうがいいよ。
That story sounds fishy, so you'd better not believe it.
この商品、値段が安すぎてインチキ臭いな。
This product is so cheap it seems dubious.
From いんちき (a slang term for cheating or trickery, possibly from インチキ, itself of uncertain origin) + 臭い (smelling of, seeming like).