smells... you will not be able to prevent where ever you are.. but ya these things make real inpression on you.. you said it doesnot have vent.. so that might be a problem with the smell specially nepalese food. and its a open kitchen... surely the smell will spread fast.. leave the spices even heating the oil will spread the scent all over.. and nepali food we all know and how strong our spices are... you might also want to think about the celing.. it might be greasy... since you have a home may be you want to rethink about your cooking habits. if i were you i would prefer to have a wall cooking place with a good exhaust vent.. when i say exhaust vent i mean it needs to have outlet with a chimney.. peace...