When travelling you must also consider the Customs requirements of the countries you visit.
If you import more than your quota of tobacco products (20 foreign made cigarette packs; 25 units of cigars or similar products; 250g of pipe tobacco)
into Brazil you will be liable for the customs duty payment to that country calculated at 50% of the value of the goods as per invoice or receipt. In case of absence or inaccuracy of these documents, the value will be calculated and established by the Brazilian Customs Authority.
http://www.receita.fazenda.gov.br/principal/In gles/faq.htm#Traveling%20to%20Brazil