Eating a lot of ginger candy from friend. Urine has kind of musty smell. Related?

Probably related. Although i don't know for sure, it is likely related. Many things we ingest appear in urine and are evident in color, smell, aspect, or all. Examples include penicillins that change the smell of urine and heavy dairy intake with vegetables that make urine cloudy due to phosphate load and alkaline state of urine. Vitamin b makes urine deep yellow. You can prove it by quitting and retrying in 2 days.