I'm not a lab based person, but in the building where I used to be based there was a PhD student using chicks. She got good publications out of her work, and went on to walk into a post doc immediately after she finished. I'm not 100% sure what she does now but I think it's using mice rather than chicks so don't think it's held her back.
Plus the fly food really smells. i used to have to hold my breath whenever i walked along what I called 'fly corridor' but people who work with flies do say you get used to it. I don't believe them!