Take another look at the sentence:
Folding the pile of T-shirts into perfect squares, this week's laundry smelled
clean and fresh.
Folding the pile of T-shirts into perfect squares, a participle phrase, comes right before laundry, an illogical target. People, not laundry, have hands that can fold clothes! Before you continue, review the rules for misplaced and dangling modifiers.
Go back to the sentence to try again.