2 sentences

1. 吸烟会导致口臭。

   xī yān huì dǎo​zhì kǒu​chòu.

   Smoking causes bad breath.

   Source: AI Challenger 2017

2. 你会注意到你的猫有口臭，他的牙龈可能有点红。

   nǐ huì zhù​yì dào nǐ de māo yǒu kǒu​chòu, tā de yá​yín kě​néng yǒu​diǎn hóng.

   You’ll notice that your cat has bad breath and his gums may be a little red.

   Source: CCMatrix