Shawn’s six children, aged between six months and 11 years old, were said to have been taken to hospital with breathing problems after an ICE agent threw tear gas at the family car.

https://news.sky.com/video/fathers-six-children-in-hospital-after-ice-agents-throw-tear-gas-at-their-car-amidst-minneapolis-protests-13494538

It may have been a flashbang, thrown into the car instead of cs gas. Although that wouldn’t have caused smoke unless it ignited part of the car or they used both.