mouth after chewing tobacco Oral Implications of Use/Abuse - An Introduction to Substance Use Disorders for Dental Professionals File:BeforeandafterGruen.jpg - Wikimedia Commons

In the second example, there is a clause after the as if

A lithium battery can be a fire risk if improperly stored and if it comes into contact with other metals

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a heavy set of squats, followed by a few bench presses, will completely exhaust a smoker

[108] The latest generation of e-cigarettes, "pod products", such as Juul, have the highest nicotine content (59 mg/mL), in protonated salt, rather than the free-base nicotine form found in earlier generations, which makes it easier for less experienced users to inhale

The copper IUD may have fewer side effects than other options because it doesnt contain hormones