Rewatch, Last Time in New York issue

Upon rewatching it dawned on me. Lily and Robin add hand sanitizer to the Glen McKenna. Most hand sanitizer is made with isopropyl alcohol which is very toxic if ingested. Had Ted, Marshal, and Barney drank much of it, they would’ve gotten very sick.
If it’s ethyl alcohol it could be ingested unless it’s denatured.
The question becomes, were Robin and Lily aware of the danger or not?