grease buildup in hoods 2
https://commercialkitchenfireinsight.solsticebrief.com/posts/the-real-cost-of-skipping-commercial-kitchen-fire-prevention
Grease buildup in hoods is that stubborn sticky film that clings to exhaust fans and filters in kitchens. Over time, cooking oils accumulate into a tacky layer that can trap dust and even become a fire hazard if left unchecked. It also makes hoods less efficient at removing smoke and odors, so giving them a regular degreasing keeps the air cleaner and the appliance running better.