How would you explain colors to a blind person?

Use other senses.

Explanation:

Blind people cannot see, so their sense of sight is out of commission. Try taking advantage of other senses like touch, smell, taste, or hearing. Sometimes adhering to feelings helps as well. For example, one might describe blue as: sad or relaxing, wet like water, cool

we could tell by the rotten smell, that something putrid was in our trash can.