Correct

扑哧

/ pū chī /
Strokes

Example

As an Onomatope

titter; snigger; fizz [sound of tittering or sniggering; sound of snorting or fizzing]

1
dòng
发动机
chī
扑哧
chī
扑哧
xiǎng
le
lai
起来
  

The engine began coughing and popping.

2
chī
扑哧
shēng
  
,
qiú
皮球
xiè
le
  

The ball got flat with a fizz.

3
chī
扑哧
xiào

chuckle; snort with laughter; titter