The opposite of Affluence is Dearth. Affluence means a lot of money, that is, wealth. Dearth is a shortage or a lack of something. Hence, it is the exact opposite of abundance and affluence.
Trash: refers to garbage or worthless things. It is not related to wealth in any way.
Indignant: refers to anger or annoyance at an unfair situation. It is not related to wealth in any way.
Pungent: refers to something that has a strong taste or smell. It is not related to wealth in any way.