A 2-year-old boy with asthma didn't have his medicine because his parents accidentally packed it in their checked bags. Dr. Khurshid Guru got to work.

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He turned an adult inhaler into a pediatric nebulizer using a cup, water bottle, some tape and an oxygen mask and tank.

"If we did not intervene at the time that I intervened, this would have been a much more dangerous situation. ... After two treatments, the child felt better," Guru told ABC.

Guru is the director of robotic surgery at the Roswell Park Cancer Institute.

He mentioned on Twitter he was relieved the child did well.

"It's a personal wake up call for families to make sure you carry these small things," Guru told WGRZ.

We're sure mom and dad will remember next time, doctor, but we're glad you were there this time around.