Correct

口对口

/ kǒu duìkǒu / 
Strokes

Example

As an Adjective

mouth-to-mouth

1
Kǒu
口
duìkǒu
对口
réngōnghūxī
人工呼吸

kiss of life; mouth-to-mouth breathing

2
Kǒu
口
duìkǒu
对口
fùsū
复苏
fǎ
法

mouth-to-mouth resuscitation