Not if you get caught in the dust clould. Most effective laxative known to mankind so I've been told.
Oooof!
When we did our training on a pan full of petrol the wind was blowing across the car park - it's a bugger to wash off!
The CO2 one's are great fun, but I wasn't expecting the noise at the end.
If anyone hasn't been on fire training at work I'd highly recommend it. Do you really know
how to use a fire extinguisher? I didn't, and thankfully I've never had to, but it's nice to know what to expect when you press the plunger, how hard you have to press, where to point it, etc.
Really, it's worth getting some training.