Depends on how you define aid?
Things they supplant local industries like textiles, agriculture, etc. are harmful.
However, medical services, loans that are used for development, investments, can help. Just ask recipients of the Marshall Plan and Japan after WW2.
Just heard a story yesterday about some of the effects of the USAID funding removals in parts of the world where medical care was being provided because there was absolutely none there before. That's useful aid. Same thing with providing retroviral medications. In this same story, they talked about a woman who was HIV positive who received medication through this program and was literally begging an aid worker for them to provide her enough medication for just 18 months to see her son graduate and she will be OK with dying afterwards. They couldn't help her. That's useful aid.