URSMARTRound Bra Inserts Pads, Removable and Washable Bra Cups Inserts for Bikinis Top Swimsuit Sport Bra

Are they like a sponge in a swimming pool?

What is the smell that is so strong in the bag they come in? It gave my wife a headache. She's hoping it will come out in the wash.

will these be too big for an A?

Ordered wrong size. what can i do? how do i contact customer service? thank you!