A fire hose exerts a force on the person holding it. This is because the water accelerates as it goes from the hose through the nozzle. How much force is required to hold a 7.5 cm diameter hose delivering 450 L/min through a 0.80cm diameter nozzle?
I do not, but that's because I don't really leave my house after the sun sets. But it makes sense that you bought it for safety reasons. Most people would buy them for a type of stylex2F;fashion. But I'm more concerned about the times you will be wearing the jacket. Are you going to take it with you everywhere? Will you wear it on hof summer night's? Be sure to get that car fixed! I'm sure it's frightening to have your car break down in the middle of nowhere.
No, I think you're completely safe :) If the detector is no longer telling you that there's a danger - It's fine! It was just the kitty! If however you do find yourself getting a sudden headache, nausea, vomiting - Be wary. Incorrectly installed, poorly maintained or poorly ventilated household appliances, such as cookers, heaters and central heating boilers, are the most common sources of carbon monoxide. You're absolutely fine. But make sure your CO detector is working :)
working in poor lighting can cause damage to your eyes. plus its just easier to see.