Creaky divans and latex allergy

Hi. We're almost at the point of ordering from you but just have 2 doubts. My wife is a former nurse who found she had a latex allergy when in direct contact through surgical gloves. We, of course, realise that she won't be in direct contact with the latex in a mattress but what are the risks? Furthermore, our existing divan was a budget one and creaks like mad when either of us even sit on the side to get in or out, meaning that we wake each other if we have to get out of bed in the night. How are your divans in this respect. Thanks.