What did Equiano find most repellent about the conditions below-decks?

Equiano found the terrible stench the most repellent about the conditions below-decks.

To add, Olaudah Equiano, known in his lifetime as Gustavus Vassa was a prominent African in London, a freed slave who supported the British movement to end the slave trade.

" ... the filth of the necessary tubs, into which the children often fell, and were almost suffocated."