They don't stink. They smell quite good like honeysuckle.My guess was Bradford pear as well. Do the flowers stink?
Here is a Bradford pear:
Looking at your first picture, you have pruned your branches too far away from the trunk of the tree, As you can see, the bark cannot grow over the end of the branch you removed. For proper healing of the tree you should remove the branches much closer to the trunk and after a year or so the woulnd will heal with an overgrowth of bark which will protect the tree from potential infections or insect pests.I prune mine to control their growth. They are fast growers.