MY LIFE CAN LAST SOME HOURS THE THING I PRODUCE IS CONSUMING ME I AM I RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

A scent or smell. A scent is important to both humans and animals and both search for scents (for different reasons). A scent travels through the air to benefit humans and animals, again, for different reasons. Did you answer this riddle correctly?
YES  NO  

Friendship Did you answer this riddle correctly?
YES  NO  

A Ninja Did you answer this riddle correctly?
YES  NO  

A watermelon Did you answer this riddle correctly?
YES  NO  

Their ruler! Did you answer this riddle correctly?
YES  NO  

They both go in a pen Did you answer this riddle correctly?
YES  NO  

The letters 'oo' Did you answer this riddle correctly?
YES  NO  

A synapse. Did you answer this riddle correctly?
YES  NO  

Ring Did you answer this riddle correctly?
YES  NO  

Talk. Did you answer this riddle correctly?
YES  NO  

The rust. Did you answer this riddle correctly?
YES  NO  

Pepper (Pepper fruit/grain, red/green/yellow/black/white pepper, Dr Pepper, Chili Pepper and Pepper spray) Did you answer this riddle correctly?
YES  NO  

Hawaii Did you answer this riddle correctly?
YES  NO  

He doesn't swim at all, he is dead. Did you answer this riddle correctly?
YES  NO  

A candle Did you answer this riddle correctly?
YES  NO