i haven´t try but ,, i think this can have a bad odor depends if you don´t clean the toy,, if you maintain your toys clean ,, none should not smell bad ,, but i think this something you should ask the people who make the toy,, may be you be lucky and somebody else has this toy ,, i don´t think the material,, smell bad
i have toys of many kind of materials and they don´t smell bad because i always use a soap that smells like apples cinnamint, honey or something ,, i am also a clean girl,, so if you´re one too,, they should not smell bad
let somebody else respond to that problem you have and your question