CREATE TABLE table_80106 ("Episode" TEXT, "First aired" TEXT, "Entrepreneur ( s ) " TEXT, "Company or product name" TEXT, "Money requested  ( \\u00a3 ) " TEXT, "Description of product" TEXT, "Investing Dragon ( s ) " TEXT)

When did episode 6 first air with entrepreneur Guy Portelli?
SELECT "First aired" FROM table_80106 WHERE "Episode" = 'episode 6' AND "Entrepreneur(s)" = 'guy portelli'
SELECT "First aired" FROM "table_80106" WHERE "Entrepreneur(s)" = 'guy portelli' AND "Episode" = 'episode 6'