Peril
A person who feels danger and gives warning is typically called an "alarmer" or "alarms someone".
Peril
Non-vocal, physical communication between animals including humans. It is important because it can show how a person really feels or thinks, no matter what they are saying. Animals use body language for everything from mating rituals through to warning of danger.
A hypochondriac
Withdrawal.
When a person feels what another person feels by touching them it is called Extra Sensory Perception (ESP) or someone that is very astute of human nature and then it is called intuition.
ADH
Milton Kaplan Feels like spring characterization
He feels danger.
when your around them everything just feels right. its called love
The person feels like an outsider of a group.
...Yes. Whenever I feel like I'm in danger,,,I slap the enemy!