That's the sound of me choking on some ashes.
I was at Bedok Hawker Centre recently dapao-ing food for dinner (you must try the hokkien mee at bedok! it's my fave!) where I realised that loads of ashes were blowing INTO the Hawker Centre. Right into everyone's hair, food, air and everywhere else.
No, I'm not blaming anyone for burning offerings. I'm blaming the wind direction.
And why isn't anyone implementing e-offerings?! (Read my silly e-offerings idea. hurhur)