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I will try to help you with this question.
The smoke itself is not so dangerous for the tv,but it will enter inside the LCD panel and give you a cloudy or uneven brightness on the picture due to the smoke deposited on the backlight lamps.Also on the exterion will form a film over the LCD panel reducing the amount of light/brightness that the tv will put out.
But the smoke itself will NOT make the tv not functional at all !
The problem is when the smoke is also HOT!This WILL damage the tv to a point where it is not functionl,due to electrical connectors melting,and parts being damaged inside the set(cracked backlight lamps etc)
I hope this answers your question,please accept my answer if you are satisfied and will be able to leave a positive feedback.
Please feel free to ask any additional questions you may have I will be gladly help you!
Thank you and have a great day!