Sterilise/wash baby bottle when travelling

When you are travelling with a bottle fed baby, how do you sterilise the bottles after use if theres no access to steriliser and dont wish to use the sterilisation tablet due to the smell and maybe baby taste. Can i just use using baby bottle soap and use hot water ? Do i need to soak the bottle in the hot water for few minutes or just roughly wash the bottle with hot water will do? And for soaking bottle with hot water what do you use to soak it with ? Since theres no bowl or anything