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is there a spray that makes unconscious
I'm not sure of the spray, but it is actually Chloroform that is often seen being used with a cloth over the person's face, causing them to pass out.
Rose Water
yes
If they are unconscious and breathing, nothing will happen. If they are unconscious and not breathing, they will die.
by using halo-thane or chloroform
When a diabetic person becomes unconscious, check for their emergency glucagon injection kit, as you are calling 911. Once the person is conscious, treat the same as you would a person who has not been unconscious.
When the person does not respond
Go to sleep.
The powder that can make a person unconscious is called "बेहोश करने वाली पाउडर" in Hindi.
Depends on the person and situation.
No, life support is care given to any unconscious person