Answer:
Maybe you have some sort of allergy. This isn't always the case, maybe you got water up your nose and its coming back out, or maybe you have fluids that need to leave your body. Or just maybe you're sick. In which case wear a mask when going outside.
Explanation:
A paragraph can be as long as it has to be. A paragraph is meant to contain an idea. It can be 20 sentences long or it can be 6 sentences long.
Even if you were to define that a paragraph is 6 sentences long, then comes the question, how long should a sentence be? 10 words? Or 25 words? And then comes how many letters the words should be on average. 2 letters per word on average? Or 7?
<span>So how long a paragraph can be is all relative...</span>