Hmm, first lets find out what ablation is
1. Surgical excision or amputation of a body part or tissue.
2. The erosive processes by which a glacier is reduced.
3. Aerospace. The dissipation of heat generated by atmospheric friction, especially in the atmospheric reentry of a spacecraft or missile, by means of a melting heat
Okay, so under condition 1, it might smell like burning meat, condition 2, it should just be steam, and condition 3, the whole darn thing is vaporized.
Ya, I'd be concerned about the fumes. I'd do some research to see how to collect and reduce the fumes.