I don't use ANY polyurethane products, Osmo, shellac or vegetable resin based only.
I have Osmo in my house, but use shellac more for clients since it is much cheaper.
For more information:
Read "What are the best low-maintenance, durable stains and urethane finishes for wood floors?" a Q&A answered by J Neufeld.
Also, check Victoria Schomer's Q&A "What is truly the healthiest wood floor option, and what are the safest finish products to use?"