My husband, my sister and I have a LLC my sister is going bankrupt. Does that mean me and my husband have to as well.
No, a LLC is what is called a “corporate entity”. An LLC is almost every case is its own entity and is not tied to its owners assets, nor does it tie inviduals assets together.
However, the ownership of this LLC by your sister is an asset, and it may be subjected to creditors (Im not positive the law on this, and it also probably depends on the type of bankruptcy).