E-cigarettes are becoming popular among teens and young adults. Several studies show that tobacco smoking has decreased since the rise of use of e-cigarettes. However, a study from US Poison Control says that there is also an increase in people who get e-cigarette nicotine poisoning from using the device, particularly toddlers who accidentally drink the liquid nicotine inside.

Liquid nicotine poisoning is very harmful for children, particularly those under the age of six, Reuters reported. In cases of liquid nicotine poisoning among children, some come out unscathed, but there are cases where children suffered from seizures, coma and there was even one who died because of it.

E-cigarette poisoning figures soar as vaping habit spreads across UK https://t.co/R1WKUQoCZx via @guardian

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The study published online in the journal Pediatrics revealed that there were 4,000 calls to various US Poison Control centers about e-cigarette nicotine poisoning from January 2012 to April 2015. Every month, the department receives more than 200 calls of incidents where children swallow, inhale or touch e-cigarettes. Most of the children reported were under the age of 2.

Liquid nicotine is a primary component used in e-cigarettes. Senior author Dr. Gary Smith explained that liquid nicotine is concentrated and can be easily absorbed by the body, CNN shared. Children accidentally get their hands on liquid nicotine because e-cigarette products are not stored properly or are within their reach. It reportedly doesn't help that liquid nicotine juices are colorful. They also come in various flavors including cinnamon, bubble gum, cheesecake, fruit flavors and candies.

Smith and his colleagues warn parents and other adults who live with small children to keep e-cigarettes and liquid nicotine products out of their reach. They recommended storing them in locked places or in places that are hidden, CBS News noted. Parents should call for help if they suspect their kids have gone near e-cigarettes or are exposed to liquid nicotine poisoning. The Poison Help Hotline is 1-800-222-1222.