is it illegal in the state of indiana to let a 17 year old smoke in his home with parental permission?

Answer 1

Yes.
Tobacco Laws
The Excise Police would like you to know...

1. The law defines Tobacco as:
a) Chewing tobacco
b) Cigars, cigarettes, and snuff that contain tobacco
c) Pipe tobacco. (IC 35-46-1-1.7)
2. If a business' primary activity is the sale of tobacco, tobacco products, and tobacco accessories, then, that business shall be defined as a Tobacco Business. (IC 35-46-1-1)
3. It is unlawful for a person to knowingly sell or distribute tobacco or tobacco products, (as defined above in #1) to a person who is less than eighteen (18) years old. A person who knowingly does this commits a Class C infraction.
Additionally, the buyer must pay the seller for the tobacco product for the sale to take place, and, it is not a defense for the person to whom the tobacco was sold that they did not smoke, chew, or otherwise consume the tobacco. (IC 35-46-1-10)
4. Anyone under the age of eighteen (18) may not:
a) Purchase
b) Accept
c) Possess tobacco products. (IC 35-46-1-10.5)
5. A retail establishment commits a Class C infraction if they sell or distribute tobacco to anyone under the age of eighteen (18). This is in addition to the employee who actually conducts the sale. The purchaser must pay the retail establishment for the sale to take place under this section. (IC 35-46-1-10.2)
6. No tobacco business may operate within two hundred (200) feet of a public or private elementary or secondary school.
This distance is to be determined by measuring the nearest point of the premises occupied by the tobacco business and the nearest point of the building used by the school for instructional purposes. (IC 35-46-1-11.2)
7. It is unlawful for anyone less than eighteen (18) years of age to enter a tobacco business, or for that tobacco business to allow anyone under eighteen (18) to enter their retail establishment.
There must be a sign in boldface type conspicuously posted on all entrances, that states: "NOTICE: It is unlawful for a person less than 18 years old to enter this store." A person who violates this section commits a Class C infraction. (IC 35-46-1-11.7)
8. Tobacco vending machines are not allowed to be placed in, or directly adjacent to, an entraceway or an exit. They are not allowed in a restroom, hallway, or any common area that anyone less than eighteen (18) years of age has access to.
Further, a tobacco store may not sell or distribute tobacco by use of a coin machine, nor may they install or maintain a coin machine that is to be used for the sale or distribution of tobacco. (IC 35-46-1-11.5)
9. Tobacco vending machines that are placed in locations allowable by law (as explained in #8 above) must have a conspicuous notice posted on them that reads as follows: "If you are under 18 years of age, YOU ARE FORBIDDEN by Indiana law to buy tobacco from this machine."
This sign must read exactly as above, including the capitallization. Establishments selling tobacco at retail are required by law to post and maintain a sign that reads as follows: "The sale of tobacco to persons under 18 years of age is forbidden by Indiana law."
This sign is to be printed in letters at least one-half (1/2) inch high and must be posted in a conspicuous place. (IC 35-46-1-11)
10. Advertising tobacco products is limited to an area less than 14 square feet. This includes any outdoor advertisements, billboards, advertisements at the street level in windows, or on the exterior of a business.
Further, this advertisement cannot exceed fourteen (14) square feet if it functions as a segment of a larger unit or series of advertisements. (IC 35-46-1-11.3)

Note: This list contains only a few of the laws and regulations that an establishment should be familiar with before selling tobacco. When in doubt, about any law, check it out beforehand so problems may be avoided.

Answer 2

Is it legal for 17 year olds to smoke in Indiana?

If not, then its still illegal. It doesn't matter if someone's parents give them permission to break the law.

Answer 3

Interesting. Is it actually illegal for a minor to SMOKE or just to buy cigs? I can't imagine anyone would prosecute that.