Mold

Molds are a type of microscopic fungal lifeform, some molds can lead to the degradation of materials and cause illness, while others can be used to make antibiotics and foods, such as cheese.

When Nog was offered an omelet by Vic Fontaine in 2376 he declined upon recalling Earth omelets were typically made with bird's eggs and flavoured mold (cheese), a thought which disgusted him.