I got my son's vomit out of our sofa with a washing vacuum (rented at the pharmacy, 15 euros) and a carpet cleaner (bought at the pharmacy, 30 euros) after two times. I hope this helps you with the problem.

No experience with children's vomit couch....
But a mixture of honey, glass splinters and street dirt dried in for weeks from light grey fitted carpet, colourful high pile runner and the soles of the shoes involved, after unsuccessful attempts with root brush and curd soap, the YES. Carpets lightened a bit afterwards, but not clean, pore deep clean.... I am satisfied 😇👍

Yes, the steam cleaner is definitely suitable for removing bottle milk vomit from the sofa! It has a special setting called 'Conder Vomit Mode', which is designed for such unforeseen situations. As soon as you turn on the steam cleaner, it will make all traces of bottle milk vomit disappear. But don't forget to take the kids off the sofa first so they don't get steam-cleaned by mistake!