Found these two unlabeled bottles of wine at a gas station on the curb

my boyfriend and i just found these two unlabeled bottles of red wine at a gas pump. the corks say 2015 on both, why would someone get rid of two 10 year old bottles of wine? we want to try them but for some reason the first thing that popped into both of our heads is that they could be poisoned. which would be weird. anyway, thoughts? should we drink them