The noun snot can be countable or uncountable. In more general, commonly used, contexts, the plural form will also be snot. However, in more specific contexts, the plural form can also be snots e.g. in reference to various types of snots or a collection of snots.

How do you say nose plural?

Hi Yahaira, The plural form of nose is noses.

What is the plural of congestion?

The plural form of congestion; more than one (kind of) congestion.