As long as it is classified as "1k water clear" Ask the attendant to be sure.
Yes, kerosene heaters are safe for indoor use, such as the Mr. Heater F215100 Portable Buddy Series, which is certified for indoor operation.
No, it is not safe to use acetone in a kerosene heater. Acetone is a highly flammable liquid that can ignite easily and produce harmful fumes when burned. Kerosene heaters are designed to burn kerosene, which has specific properties that make it suitable for use in these heaters. Using acetone in a kerosene heater can pose serious safety risks and should be avoided.
over outdoor heaters? definitely.
Older style kerosene heaters do increase humidity. Electric heaters do not - they tend to reduce humidity.
Yes
For physical implications, sleeping with a kerosene heaters should be fine as long as there is nothing combustible surrounding it. However, I wouldn't want to sleep in a room where there is an accelerant constantly burning. It's your prerogative though.
Burning biofuel in kerosene heaters is generally not recommended unless the heater is specifically designed for that purpose. Kerosene heaters are optimized for burning kerosene or similar fuels, and using biofuels can lead to incomplete combustion, increased emissions, and potential damage to the heater. If you wish to use biofuels, it's important to consult the manufacturer's guidelines or choose a heater designed for multi-fuel use.
Corona kerosene heaters are used for heating up a stove and acting as small lanterns or heaters. They could potentially be used in cases where your normal heater is burned out.
wat if i knock down a kerosene heater
See: How Safe are Vent Less Heaters
wat if i knock down a kerosene heater
Please look at the Related Links section of this question. This is a store that provides wicks for all kinds of kerosene heaters.