Question

how can we get the smell of perfume sitting metres away​

Answer 1

The perfume molecules spread out or 'diffuse' through the air. The smell becomes less concentrated but it reaches a great distance - meaning you can smell it from relatively far away. When a perfume is sprayed several metres away from the source, the particles of the perfume diffuses with the particles of the gas

Answer 2

Answer:

Urination of adults, as well as infants, is controlled by the neural circuit which is very complex and highly distributed as it involves pathways at many levels of the brain, spinal cord and the peripheral nervous system and is mediated by multiple neurotransmitters.