There are two ways of co-owning property. If your and your husband have a 'joint tenancy' (which is the most common way of co-owning), neither of you owns a specific share of the properties. It's your 'partnership' that owns all of them. As such, when one of you dies, the surviving partner automatically acquires full title to the properties. (Absolutely nothing written in a will can change that. Neither of you can leave your 'share' of the properties to anyone, or to a trust, because you don't actually own a share).
However if you're 'tenants in common' then you both own a specific share in each property (which will be a half unless there's a written agreement otherwise). When one of you dies, the terms of the deceased person's will then come into effect. So if, and only if, you're actually tenants in common, your husband can gift his share of the properties into a trust but your share will remain unaffected. (i.e. you'll still own it).